AutoCodes – GMC – B2356 GMC

B2356 GMC Code - Seat Front Vertical Position Sensor Circuit Range/Performance

Quick Answer

The sensor that sets this Diagnostic Trouble Code (DTC) is attached to the seat directional motor it monitors. Common causes include Faulty Seat Front Vertical Position Sensor, Seat Front Vertical Position Sensor harness is open or shorted, Seat Front Vertical Position Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B2356 GMC indicates Seat Front Vertical Position Sensor Circuit Range/Performance.
Common causes: Common causes include Faulty Seat Front Vertical Position Sensor, Seat Front Vertical Position Sensor harness is open or shorted, Seat Front Vertical Position Sensor circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 721

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 13, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2356 GMC Description

The sensor that sets this Diagnostic Trouble Code (DTC) is attached to the seat directional motor it monitors. It receives a 5-volt reference and low reference from the Memory Seat Module (MSM)/Driver Position Module (DPM). The sensor sends a voltage signal that varies with the movement of the seat through the sensor signal circuit to the MSM/DPM. Then based on this voltage signal, the MSM/DPM determines the position of the seat.

OBDII Code B2356 GMC - Seat Front Vertical Position Sensor Circuit Range/Performance - AutoCodes.com — B2356 GMC Code - Seat Front Vertical Position Sensor Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC B2356 GMC?

Faulty Seat Front Vertical Position Sensor
Seat Front Vertical Position Sensor harness is open or shorted
Seat Front Vertical Position Sensor circuit poor electrical connection
Faulty Memory Seat Module (MSM)/Driver Position Module (DPM)

How to Fix the DTC B2356 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2356 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2356 GMC Code

1. What are the common symptoms of OBDII code B2356 GMC?

- The common symptoms include incorrect front seat position adjustments, erratic movement of the driver's seat, and illuminated warning lights on the dashboard.

2. What can cause the OBDII code B2356 GMC to trigger?

- The code B2356 GMC is triggered when the front vertical position sensor circuit detects a range/performance issue. This can be caused by a faulty sensor, damaged wiring, or a loose connection.

3. How can I diagnose the cause of OBDII code B2356 GMC?

- Diagnosing the cause of this code involves inspecting the front vertical position sensor, checking the wiring for damage, and testing the sensor's functionality using a multimeter.

4. What are some repair tips for addressing OBDII code B2356 GMC?

- Repair tips include checking and repairing any damaged wiring, ensuring all connections are secure, and replacing the front vertical position sensor if necessary.

5. Can I drive my vehicle with OBDII code B2356 GMC active?

- It is generally safe to drive your vehicle with this code, but it is recommended to address the issue promptly to prevent further damage or inconvenience.

6. How do I reset the OBDII code B2356 GMC after repairs?

- After completing the necessary repairs, the code can be reset using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.

7. Is it possible to prevent OBDII code B2356 GMC from occurring?

- While some issues may be unavoidable, regular maintenance checks, keeping wiring connections secure, and promptly addressing any sensor-related problems can help prevent this code from triggering.

8. Can a DIY enthusiast repair OBDII code B2356 GMC?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address this code by following repair guides and tutorials specific to their vehicle model.

9. How much does it typically cost to repair OBDII code B2356 GMC at a mechanic?

- The cost of repairing this code at a mechanic can vary depending on the extent of the issue, the labor rates in your area, and whether any parts need to be replaced. It is advisable to obtain quotes from different mechanics for comparison.

10. Will OBDII code B2356 GMC cause my vehicle to fail an emissions test?

- While this code is related to the seat position sensor and not directly emissions-related, it is still recommended to address it before undergoing an emissions test to ensure all systems are functioning properly.